An Improving Method of Flicker Problem of Plasma Display Panel using RBC

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  • RBCを適用したプラズマディスプレイのちらつき改善の一方法
  • RBC オ テキヨウシタ プラズマ ディスプレイ ノ チラツキ カイゼン ノ

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Abstract

PDP (Plasma Display Panel) is a self light emitting matrix display device using luminescent phenomenon with gas discharge. It has such features as thin depth, wide view angle, free from geographical distortion, and high brightness. Gray scale is controlled by sub-field driving method using binary weighted pulse width modulation (LSB to MSB sequence). Sub-field method essentially has a flicker problem for displaying moving images. When two close gray values are displayed in particular interval (field frequency), flicker phenomenon appears.<br>In this paper, time-amplitude co-modulation sub-field method using RBC (Redundant Binary Code) is proposed. This driving method increases conventional two level gray scale {0, 1} to three level gray scale {0, 1/2, 1}, combining light emitting time and amplitude, and selecting driving waveform not to produce flicker. Even if two close gray values are displayed alternately in field time, light emitting frequency is no more divided into frame frequency. Proposed driving method improves flicker problem compared to conventional sub-field method.

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